Superconducting strand for alternating current
First Claim
1. A superconducting strand for alternating current, comprising:
- a non-magnetic core member;
superconducting wires of a number not less than 13, each superconducting wire having a diameter smaller than that of said core member and said superconducting wires being stranded on the outer peripheral surface of said core member in a single-layered form; and
electrically insulative layer means interposed between said core member and said stranded superconducting wires.
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Accused Products
Abstract
There is provided a superconducting strand for alternating current which is formed by stranding 13 or more superconducting wires having a diameter smaller than that of a non-magnetic core member in a single-layered form on the outer peripheral surface of the core member and which can efficiently remove heat caused by AC loss, avoid a quenching phenomenon and stably maintain the superconducting state. Preferably, an electrically insulataive braided layer formed of polyester fiber is interposed between the core member and the stranded superconducting wires and stable insulation can be maintained therebetween, thereby preventing flow of coupling current caused by defective insulation and suppressing partial heat generation. The superconducting wire contains a large number of NbTi superconducting filaments and a non-magnetic stainless steel wire can be preferably used for the core member.
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Citations
11 Claims
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1. A superconducting strand for alternating current, comprising:
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a non-magnetic core member; superconducting wires of a number not less than 13, each superconducting wire having a diameter smaller than that of said core member and said superconducting wires being stranded on the outer peripheral surface of said core member in a single-layered form; and electrically insulative layer means interposed between said core member and said stranded superconducting wires. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification